|
Hi,
I'm trying to write application where I use series of PNG files for animations. I created control which loads Images from file into ArrayList, and then on specified timer interval I change picture that I want to display. I'm using 1280x720 PNGs.
I have 2 problems here:
1) My PNG is around 300KB, and when I execute Image.FromFile("my.png") memory of my process is increased for 4MB. So, if I load 30 pictures, memory will grow to around 130MBs and the problem is that I have to keep lot of images loaded into memory since I'm using it constantly during execution time.
2) performances of DrawImage functions are quite bad and I cannot get proper speed (if I need 25 frames per second for example)
Does anyone have some suggestions how to solve this?
Thnx in advance!
|
|
|
|
|
Firstly, PNGs aren't really the best way to do animations. You should maybe think about using GIF images instead.
ddavor wrote: 1) My PNG is around 300KB, and when I execute Image.FromFile("my.png") memory of my process is increased for 4MB. So, if I load 30 pictures, memory will grow to around 130MBs and the problem is that I have to keep lot of images loaded into memory since I'm using it constantly during execution time.
I suspect (although I haven't tried it) that the 4MB jump is mainly a one-off overhead, and you won't get that increase on subsequent image loads. Try it and check though.
ddavor wrote: 2) performances of DrawImage functions are quite bad and I cannot get proper speed (if I need 25 frames per second for example)
You're drawing a 300KB 1280 x 720 PNG image, so I'm not surprised it's a bit slow...
An animated GIF will automatically play when loaded (although if you keep to that size it may still be a bit slow - again you'd need to test it) and if you can reduce the quality a bit you can probably reduce the file size to something more reasonable.
Alternatively, combine the images into an AVI and use a simple AVI player to show the animation.
There are three kinds of people in the world - those who can count and those who can't...
|
|
|
|
|
Hi,
Thnx for your reply, but I need high quality of graphics with transparency etc. So, GIF and Avi are not solutions.
Thnx!
|
|
|
|
|
Well, GIF images do support transparency, although it's just on/off rather than an alpha value, so you could possibly use that format depending on your use of transparency. GIF also isn't as good for "photo-style" images, where there are a lot of colour gradients, but it works well for images where there are a lot of colour bocks, lines etc. (In fact, for diagrams with lots of colour blocks and sharp edges, it gives much better results.)
AVIs can be as high quality as you want as well. You can choose the resolution and whether you want any compression applied. AVIs can have transparency as well, but you'd need to make sure you support that in your player.
I wouldn't write of GIF or AVI immediately, as they might, with a little bit of fiddling, be suitable for your needs. If not, I'm not sure what you can do to improve frame rate...
There are three kinds of people in the world - those who can count and those who can't...
|
|
|
|
|
AVI could do the quality, however the transparency could be a problem. 1280x720 is a LOT of real estate to cover, if the entire area isn't being animated at the same time, you might be better off only redrawing the parts of the screen that change. Or moving a picture around the screen as the animation.
Aside from that, your next step would probably be using managed DirectX to pile all those graphics into buffers.
The true man wants two things: danger and play. For that reason he wants woman, as the most dangerous plaything.
|
|
|
|
|
ddavor wrote: I execute Image.FromFile("my.png")
This response is nothing to do with your main problem, but Image.FromFile has been known to cause problems with files becoming locked. The general recommendation is to use Image.FromStream.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
|
|
|
|
|
I am having an issue on a photo gallery that is random. I add a photo and it is supposed to save the location in an Access DB backend. It then has a thumbnail view for the photo. At random I get a red X instead of a thumbnail and get an error...its COMPLETELY RANDOM...if I clear the photo from that thumbnail and re-add it...it adds the photo, but continues to give me red X's and I have to clear and re-add...
See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.ArgumentException: Parameter is not valid.
at System.Drawing.Image.get_FrameDimensionsList()
at System.Drawing.ImageAnimator.CanAnimate(Image image)
at System.Drawing.ImageAnimator.ImageInfo..ctor(Image image)
at System.Drawing.ImageAnimator.Animate(Image image, EventHandler onFrameChangedHandler)
at System.Windows.Forms.PictureBox.Animate(Boolean animate)
at System.Windows.Forms.PictureBox.Animate()
at System.Windows.Forms.PictureBox.InstallNewImage(Image value, ImageInstallationType installationType)
at System.Windows.Forms.PictureBox.LoadCompletedDelegate(Object arg)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3082 (QFE.050727-3000)
CodeBase: file:///c:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
Program
Assembly Version: 1.0.4.15
Win32 Version: 1.0.4.15
CodeBase: file:///C:/Program%20Files/Program/Program.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
NHibernate
Assembly Version: 2.0.1.4000
Win32 Version: 2.0.1.4000
CodeBase: file:///C:/Program%20Files/Program/NHibernate.DLL
----------------------------------------
log4net
Assembly Version: 1.2.10.0
Win32 Version: 1.2.10.0
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/log4net/1.2.10.0__1b44e1d426115821/log4net.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3082 (QFE.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Iesi.Collections
Assembly Version: 1.0.0.3
Win32 Version: 2.0.1.4000
CodeBase: file:///C:/Program%20Files/Program/Iesi.Collections.DLL
----------------------------------------
NHibernate.JetDriver
Assembly Version: 2.0.0.2001
Win32 Version: 2.0.0.2001
CodeBase: file:///C:/Program%20Files/Program/NHibernate.JetDriver.DLL
----------------------------------------
System.Data
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
gl5flowv
Assembly Version: 2.0.1.4000
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
cnoliknr
Assembly Version: 2.0.1.4000
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Transactions
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Transactions/2.0.0.0__b77a5c561934e089/System.Transactions.dll
----------------------------------------
System.EnterpriseServices
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.EnterpriseServices/2.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll
----------------------------------------
************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.
For example:
<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>
When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.
|
|
|
|
|
Well my guess is that there is a problem loading the image from the database. Can you give more information and show the code you are using to load the picture from the database and loading from new.
Life goes very fast. Tomorrow, today is already yesterday.
|
|
|
|
|
The image loading is done by a "pictureBox.ImageLocation=" statement. It happens sometimes when loading and adding photos using right click. If you need some code can I email it to you.
|
|
|
|
|
put the code on here.
the thing with picture boxes is when you load them directly from a file they can cause problems with access to the files. When loading picture boxes it best to load it from a memory stream, something like this...
PictureBox1.Image = Image.FromStream(new MemoryStream("imagefile"));
Life goes very fast. Tomorrow, today is already yesterday.
|
|
|
|
|
Here you go...
This is the picture box creation code:
PictureBox pictureBox = new PictureBox();
pictureBox.Left = (i % 10) * 36 + 4;
pictureBox.Top = ((i / 10) + startRow) * 36 + 4 - galleryScroll;
pictureBox.Width = 32;
pictureBox.Height = 32;
pictureBox.BorderStyle = BorderStyle.FixedSingle;
pictureBox.ContextMenuStrip = pictureMenu;
pictureBox.Click += galleryPictureBox_Click;
pictureBox.Visible = true;
panel1.Controls.Add(pictureBox);
Below is the image loading thread:
delegate void SetupGalleryBoxCallback(PictureBox box, Image image, bool showError, string tooltip);
private void setupGalleryBox(PictureBox box, Image image, bool showError, string tooltip)
{
if (this.InvokeRequired)
{
SetupGalleryBoxCallback d = new SetupGalleryBoxCallback(setupGalleryBox);
this.Invoke(d, new object[] { box, image, showError, tooltip });
}
else
{
if (image != null)
{
box.SizeMode = PictureBoxSizeMode.Zoom;
box.Image = image;
}
else if(showError)
{
box.SizeMode = PictureBoxSizeMode.CenterImage;
box.Image = box.ErrorImage;
}
Program.tooltip.SetToolTip(box, tooltip);
}
}
void imageLoadingThread()
{
int count = (_galleryItems != null) ? _galleryItems.Count : 0;
Image errorImage = galleryLargePictureBox.ErrorImage;
for (int i = 0; i < _galleryPictureBoxes.Count; i++)
{
if (i < count)
{
object[] galleryItem = (Object[])_galleryItems[i];
String imagePath = (string)galleryItem[0];
String toolTip = (string)galleryItem[2];
if(imagePath != null)
imagePath = imagePath.Trim();
if (imagePath != null && imagePath.Length > 0)
{
try
{
Image image = Image.FromFile(imagePath.Trim());
setupGalleryBox(_galleryPictureBoxes[i], image, false, toolTip);
}
catch (Exception)
{
setupGalleryBox(_galleryPictureBoxes[i], errorImage, true, toolTip);
}
if (i == _galleryPictureBoxes.Count - 1 && imagePath != null)
addPictureBoxes(1);
}
else
setupGalleryBox(_galleryPictureBoxes[i], null, false, toolTip);
//Console.WriteLine("Comment={0}", (string)((object[])_galleryItems[i])[2]);
}
else
_galleryPictureBoxes[i].ImageLocation = null;
}
}
|
|
|
|
|
Hi,
I need to use VSConstant class present in Microsoft.VisualStudio.Shell.9.0 in my program.
To that effect, I add at the top of my .cs file:
using Microsoft.VisualStudio.Shell.9.0;
VS2008 (Standard version) says that Microsoft.VisualStudio.Shell.9.0 does not exist in the namespace. Am I missing an assembly reference? Note that I can locate the Microsoft.VisualStudio.Shell.9.0 assembly in C:\assembly.
The same problem occurs if I wanted to use Microsoft.VisualStudio.Shell.
I right clicked on the "Reference" in the solution explorer and wanted to add then a reference to Microsoft.VisualStudio.Shell.9.0 assembly. It did not appear in the .NET list. I browsed then with the BROWSE tab. I locate the assembly and pressed OK. Even though it looks like it was loaded, the reference does not appear anywhere and VS2008 is complaining.
Would you have any idea how to come out of this?
Thanks beforehand if you have any idea.
P.S.: I have also installed previously on this PC VisualC#2008 Express. Could this be the problem?
|
|
|
|
|
I'm guessing you need to download and install the Visual Studio Shell[^]
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
|
|
|
|
|
I have asp.net web application on my server side. There is one device at my client side, that device send me data using my ip address and one port no(iis port). i want to show that data in my default.aspx page how can do this??
please help me
|
|
|
|
|
Please don't try to bump your post. This is very bad form.
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
|
|
|
|
|
what do you want to say...? first correct the spelling.
|
|
|
|
|
His spelling is correct. You appear to have reposted a question to get it further up the message listing. This is considered bad form (rude)
Between the idea
And the reality
Between the motion
And the act
Falls the Shadow
|
|
|
|
|
|
My spelling is correct. What I am saying is that it is rude and disrespectful of other posters when you attempt to bump your post (hence it's bad form).
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
|
|
|
|
|
ok..... now if you have any idea on my post then help me..
|
|
|
|
|
yrishi wrote: now if you have any idea on my post then help me
That is bad form AGAIN. It sounds like you are demanding that he help you. He doesn't owe you anything. No one here does.
About your question. That fact that people cannot understand your question is your fault, not theirs. Perhaps you need to study the technology you are attempting to use so that you may pose questions using knowledge and standard terms that people will understand.
|
|
|
|
|
You have to create ActiveX object to use the device.
Regards
Saanj
Either you love IT or leave IT...
|
|
|
|
|
You can write a Server application from asp.net using socket which listens a port. 
|
|
|
|
|
I have several list collections(i.e list1,list2 list3...etc)
and i have one xml file(i.e data.xml).I am storing the xml data to my suitable lists(i.e edge data in list1, subpart data in list2 like this...)
Now after storing the xml data in list collections i want to save this data from list to data base.
Till my coding is doing fine working properly and date are geting save into database.
But this entire process is time taking and user does not know when this process will completeed.Basicaly the xml file is not fixed.i will get sevaral xml file with more or less data(data structure of xml file is same).
I want to implement the progress bar here to inform how many hours or minutes or seconds left to to finise the entire process from storing xml data into list to saving data in database
can anyone give me idea about it...
with regards
tarak
|
|
|
|
|
TARAK NATH ROY wrote: I want to implement the progress bar here to inform how many hours or minutes or seconds left to to finise the entire process from storing xml data into list to saving data in database
You can't really do this. When you think about it, progress is dependent on many factors outside your control, such as network latency, server load, type of operation to be performed, other processes running on your machine, and so on. So all you can do is give (at best), a rough approximation of how long it will take.
Most algorithms work by knowing how many operations need to be performed, and then start by calculating how long one operation takes - then extrapolating the total time from this. After a certain number of operations, this figure is refined because there is greater statistical sampling at this stage. This is done over and over, until the operation is finally completed.
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
